Wrench



J. SHEARMAN.

WRENCH.

APPLICATION FILED MAY I3, 1921.

' 1,41 3,622. Patented Apr. 25, 1922.

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1730077170 77 John 57Z/6LZ/77H/GJD.

20 the fixed jaw to engage and grip "the ob which the following is a specification.

JOHN sHEAn vrAN, or Becomin ;missicaesatmsg WRENCH.

naia eee.

' Application filed May 13,

To all whomitmay.concern: I H:

Be it known that I, JOHN bHEAnMAN, a. citizen of the United States, "residing at Brookline, in the county. ofNorfolk and State of Massachusetts, have invented. new. and usefullmprovements in renches of vide azdevice of the character. disclosed havmg: a fixed jaw provided: with a plurality of sets of "permanently. located: gripping teeth and a-mo va'ble jaw. which may co-opera'te with each ofi-the sets of gripping teeth of jects desired. l

. The; inventionconsists in the combination and arrangement of parts set forth infthe following specification rand: particularly pointed ou'tinithclaiihs thereof. r Referring .tofthe drawings 2' J Figure 1 representsa side elevation of a wrench embodyingmy invention; 1 -'Fig.12 represents .a side elevation partly in section illustrating my improved wrench applied-to a pipe. r F 'g. 3 is a. view similar to Fig. 2 illustratq ing another manner in which .myimproved wrench may be applied to apip e. 'Fig. 4 is a'hori'zontal section taken on the line 44 of Fig. 1. j Y

Fig. 5 is a vertical section taken on the line 55 of Fig. 1.

Like numerals refer to like parts throughout theseveral views of the drawings.

In the drawings, 7 represents a shank, one end of which is secured in anydesired man ner within a suitable handle 8, while the other end thereof terminates .in an enlarged 3 portion constituting a fixe d'jaw 9'. The

fixed jaw 9 is formed to provide two sets of suitably formed gripping'teeth 10 and 11, the teeth 10 being located upon the outer extremity of said fixed aw 9 while theteeth 11 are located upon the front edge of said jaw. Extending transversely through the fixed jaw 9 is a slot 12 in which is located a pin 13 which constitutes a pivot for a yoke 14. The yoke 14 embodies therein plates 15 and 16 arranged parallel to each. other Specification o fLetters Patent." Pat'entedApiu 25,1922.. H

921. Serial No. 469,254." 7

upon opp osite sides ofi thepshank .:7 and jaw 9, said plates being held in correctspaced relation to each other bypins 17 and 18 andthe pivotal pin -1'3,'the opposite ends'ot each of said. pins being-preferably riveted to said plates. The yoke l4=iis..furthermore permitted by the lengthwof the slot 12. I Slidably t mounted within the yoke 14 be tweenltheplates 15 ancllfizis a member 19,

one end of which iisqbent to form ajaw 20 constituting a movable jaw and provided with; suitably tormed gripping 5 teeth '21 which are opposed to'the teeth of the fixed j ant-9. ....The front and rear edges of: the, slidableimiember 19 are provided with setsot.

. slidable upon the shank .7, within the limits teeth 22 and 23 resp.ectively each'ofwhich.

are preferably 'it'ormedysimilar' to rack. teeth. The, teeth 22. arerprovided "to engage and co operatellwith the .teeth 1010i thefixed jaw 9 "whenthe-device. is used :as .:illustrate'd1fin Fig; Sj-whiletheteeth 23als'o formed similar tozthe teeth ,22- are adapted} to engage" and cooperate with" the pins 175i and 18 .to -prevent a longitudinal; movement 1 0t Jthe, slijdable f member 19between the." lates15 and'bl6 of,

the yoke 14 when said .s 'dabl'el'member has been 'adju'sted toa suitable position tor-the gripping jaws 9' a 1d,20 to loperatively engage a pipeA.

A pin 24 located adjacent to the lowerend of 'the. s'lidable' member 19 and extending therethrough is adapted to engage the under edge otthe plates I15. and 16ofthe yoke '14 to limit the'movement ofsaid slidable memb'erwithin said yokeand alsouto prevent said slidable member from becoming removed therefrom. Y It is evident that the teeth 10, 22 and 23. may be formed in any suitable mannerwithout departing from. the spirit otthis invention. 7 w

Infthe" operation. of the 'wrenchthe mov- V able member 19 may be adjusted, as .illustrated in.- Fig. *2,'to correctlyaposition the jaw'2O .tor thev teeth 21 thereof to. .co-operate with the teeth 10 of the fixed jaw. 9 to engage the pipe A, atwh ich time the teeth 23 of said movable member will engage the'pin 17 which will thereafter preventusaid' movable member. from moving longitudinally within the yoke 14. It, on the-otherahan d, however, it is found .moreconvenient to operate thewrench as illustrated in-uFig; 3, the. yoke '14 is slid longitudinally of :the

shank 7 withinv the limitsof the slot 12 and then tipped uponthe pivot 13 to-the position illustrated in said Fig. 3. The movable member 19 is then adjusted within the yoke 14 to a position where the teeth 21'will cooperate with the teeth 11 of the fixed jaw to en age the pipe A. At such times the pin 1 will prevent the movable member 19 from moving longitudinally within the yoke 14; and in certain cases, the position of the movable member 19 will be suclrthat the pin 18 will co-operate with the pm 17 in preventing this longitudinal movement of the movable member 19.

It will be noted that when the various parts are positioned as illustrated in Fig. 3 and the shank 7 is rocked in the direction of V the arrow a, the pin 17 will act as a fulcrum "for the movable member 19 and the gripping teeth 10 will co-operate with the teeth 22 to force the movable member 19 toward the right in said Fig.3 and thereby cause the teeth 11 and 21 of the jaws 9 and respectively to very tightly grip the pipe A.

' also embodying therein means adapted to engage a portion of said yoke and thereby prevent a longitudinal movement'of said slidable member therein.

2.1% wrench having, in combination, a

V shank provided with afixed jawhaving a plurality of toothed gripping edges, a yoke vpivotally and slidably mounted upon said shank and a member slidably mounted within-saidyoke'and provided with a toothed gripping edge adapted to co-operate with each of the toothed edges of said fixed jaw to. grip an object therebetween, said slidable member also being provided with teeth adapted to engage a portion of said yoke and thereby prevent a longitudinal movement of said slidable member therein.

A wrench having, in combination, a shank provided with a fixed jaw having a plurality of toothed gripping edges, a yoke pivotally and slidably mounted upon said shank and a member slidably mounted within said yoke and provided with a toothed gripping edge adapted to co -operate with each of the toothed edges of said fixed jaw to grip an object therebetween, said slidable member also embodying therein sets of teeth located upon the front and rear edges thereof, one of said sets of teeth being adapted to engage a portion of said yoke to prevent a longitudinal movement of said slidable member therein and the other set ofteeth being adapted to interlock with the teeth of oneof the gripping edges of the fixed jaw.

a. A wrench having, in combination, a shank embodying therein a fixed jaw having a plurality of toothed gripping edges and provided with a slot extending therethrough, a yoke pivoted within said slot and embodying therein a pairof parallel plates and a plurality of pins, the opposite ends of which are rigidly secured to said plates and a member slidably mounted between said plates and provided with a toothed portion constituting a movable jaw opposed to said fixed j aw, said slidable member also being provided with teeth adapted-to engage said pins and thereby prevent a longitudinal movement of said slidable member within said yoke. 7

5. A wrench having, in combination, a shank embodying therein a fixed jaw having a plurality of toothed gripping edges and provided with a slot extending therethrough, a yoke pivoted within said slot and also slidable upon said shank and embodying therein a pair of parallel plates and a plurality of pins, the opposite ends of which are rigidly secured to said plates and a 'member slidably mounted between said plates and provided with a toothed portion constituting a movable jaw adapted to co-operate with each of the toothed edges of said fixed jaw to grip an object therebetween, said slidable member also embodying therein sets of teeth located upon the front and rear edges thereof, one of saidvsets of teeth beingadapted to engage said pins to prevent a longitudinal movement of said slidable member between said plates and the other set of teeth-beingadapted .to interlock with one ofthe gripping edges of said fixedjaw. 6. A wrench having, in combination, a

shank embodying therein a fixed jaw provided with a plurality of teeth-upon the outer edge thereof and a plurality of teeth upon the front edge thereof, a yoke pivotally and slidably mounted upon said shank and a member slidably mounted within said yoke and provided with a toothed gripping edge adapted to co-operate with each of the toothed edges of said fixed jaw to grip an object therebetween, said slidable member also embodying therein sets of teeth located upon the front and rear edges thereof, one of said sets of teeth being adapted to engage a portion of said yoke to prevent a longitudinal movement of said slidable member therein, and the other set of teeth being adapted to interlock with the teeth upon the outer edge of said fixed jaw.

7. A wrench having, in combination, a shank embodying therein a fixed jaw provided with a plurality of gear teeth upon the outer edge thereof and a plurality of V- shaped teeth upon the front edge thereof, a

yoke pivotally and slidably mounted upon 1,413,622 i h e said shank and a member slidably mounted Within said yoke and provided with a toothed gripping edge adapted to co-operate with each of the toothed edgesof said fixed jaw to grip an objeot'therebetween, said slidable member also embodying therein sets of rack teeth upon the front and rear edges thereof, one of said sets of rack teeth being adapted to engage a portion of said yoke to prevent a longitudinal movement of said slidable member therein, and the other set,

of rack teeth being adapted to interlock with the gear teeth upon the outer edge of said fixed jaw. i

In testimony whereof I have hereuntoset 15 my hand in presence of two subscribing Witnesses, V 'i 7 JOHN SHEARMAN.

Witnesses:

FRANKLIN E. Low, KATHRYN M. J QYCE. 

